- Sacral Dimple
- Sacroiliitis
- Salivary Gland Cancer
- Salmonella Infection
- Sarcoidosis
- Sarcoma
- SARS
- Scabies
- SCAD
- Scalp Psoriasis
- Scarlet Fever
- Schizoaffective Disorder
- Schizoid Personality
- Schizophrenia
- Schizotypal Personality
- Sciatica
- Scleroderma
- Sclerosing Mesenteritis
- Scoliosis
- Scorpion Stings
- Scrotal Masses
- Seasonal Affective Disorder
- Seborrheic Dermatitis
- Secondary Hypertension
- Selective Iga Deficiency
- Self-Injury/Cutting
- Separated Shoulder
- Separation Anxiety
- Sepsis
- Septic Arthritis
- Serotonin Syndrome
- Sex Headaches
- Shaken Baby Syndrome
- Sheehan'S Syndrome
- Shellfish Allergy
- Shigella Infection
- Shin Splints
- Shingles
- Short Bowel Syndrome
- Sick Sinus Syndrome
- Sickle Cell Anemia
- Sinus Headaches
- Sinusitis
- Sjogren'S Syndrome
- Skin Cancer
- Skin Tags
- Sleep Apnea
- Sleep Disorders
- Sleep Related Eating Disorder
- Sleepwalking
- Small Bowel Cancer
- Small Vessel Disease
- Smallpox
- Snapping Hip Syndrome
- Snoring
- Social Anxiety Disorder
- Soft Palate Cancer
- Soft Tissue Sarcoma
- Solitary Fibrous Tissue Tumor
- Solitary Rectal Ulcer Syndrome
- Somatic Symptom Disorder
- Sore Throat
- Soy Allergy
- Spermatocele
- Spider Bite
- Spina Bifida
- Spinal AVMs
- Spinal Cord Injury
- Spinal Cord Tumor
- Spinal Headaches
- Spinal Stenosis
- Spine Curvature Disorders
- Sprain and Strain
- Sprained Ankle
- Squamous Cell Carcinoma
- Stage 4 Prostate Cancer
- Staph Infections
- STDs
- Steven - Johnson Syndrome
- Stickler Syndrome
- Stomach Cancer
- Stomach Flu
- Stomach Polyps
- Strep Throat
- Stress Fractures
- Stress Incontinence
- Stretch Marks
- Stroke
- Stuttering
- Stye
- Styes and Chalazia
- Subarachnoid Hemorrhage
- Subconjunctival Hemorrhage
- Subdural Hematoma
- Sudden Cardiac Arrest
- Sudden Infant Death Syndrome
- Suicide and Suicide Related Thoughts
- Sun Allergy
- Sunburn
- Suspicious Breast Lumps
- Sweating And Body Odor
- Sweet'S Syndrome
- Swimmer'S Ear
- Swimmer’s Itch
- Swine Flu (H1N1 Flu)
- Swollen Knee
- Swollen Lymph Nodes
- Synovitis
- Syphilis
- Syringomyelia
- Systemic Mastocytosis
